Why does my phone automatically remind me when the battery level is below 20%?

The "greatest pain" in life is that your phone runs out of battery when you are playing a game, or your phone runs out of battery when you are watching a key plot in a TV series, or your phone runs out of battery when you are chatting on the phone with friends...

When many people go out, the most important thing they worry about is the battery level of their mobile phones. Whenever the phone prompts that the battery level is only 20%, they instantly lose their sense of security. Have you ever wondered: Why does the phone remind you when the battery level is less than 20%? Let me help you uncover the mystery!

Why do most mobile phones give reminders when the battery level drops below 20%?

The reminder when the battery level is below 20% is a self-protection mechanism of the battery, telling you to charge the battery in time, which can effectively extend the battery life.

If you continue to use the battery when the power is less than 20%, the activity of the battery will be reduced, which will damage the battery in the long run.

If you continue to use the battery when the power level is less than 5%, it may cause over-discharge of the battery, low internal voltage of the battery, and the inability to start or charge the device.

So, if your phone has only 20% battery left, quickly connect it to charge!

Now that we are talking about charging your phone, let’s talk about what else you should pay attention to when charging your phone. Come and take this guide from the editor!

Tips for Charging Your Phone

1. Use the original charger

When charging your mobile phone, it is best to use original charging equipment. Do not choose chargers that do not have any warranty, are purchased through informal channels, or are non-original. Otherwise, the mobile phone battery may be easily damaged, and in severe cases, the mobile phone may catch fire or explode.

2. The charging environment should be suitable

The best working environment for mobile phone lithium batteries is generally 0 to 35 degrees Celsius. When the charging environment temperature is too low, it will slow down the charging speed of the mobile phone battery. If the temperature drops to a certain limit, it may even fail to charge.

When the charging environment temperature is too high, the lithium battery will become unstable. Since the lithium battery cannot dissipate heat well, it will cause the body to become hot and may even cause the phone to spontaneously combust or explode.

3. Don’t charge your phone for a long time

When charging a mobile phone for a long time, the battery reaches an oversaturated state, which causes the chemical reaction materials inside the battery to passivate, reducing the degree of chemical reaction when the power is output, and thus damaging the battery. It is best to take off the mobile phone case to avoid affecting the heat dissipation of the mobile phone, or try to choose a thin mobile phone case. Plastic and leather mobile phone cases are better than silicone and metal mobile phone cases in heat dissipation.

That’s all for today’s science tutorial! If you want to extend the life of your phone, remember to charge it scientifically!